<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <title>my-app</title>
</head>

<body>
  <div id="app"></div>
  <!-- built files will be auto injected -->
</body>
<script>
  // fnResize()
  // window.onresize = function () {
  // fnResize()
  // }
  // function fnResize() {
  // var deviceWidth = document.documentElement.clientWidth || window.innerWidth
  // if (deviceWidth >= 750) {
  // deviceWidth = 750
  // }
  // if (deviceWidth <= 320) {
  // deviceWidth = 320
  // }
  // document.documentElement.style.fontSize = (deviceWidth / 7.5) + 'px'
  // }
  document.documentElement.style.fontSize = document.documentElement.clientWidth * 20 / 320 + 'px';

</script>

</html>